boost-exception.reno

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																<string>diagnostic information</string>
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																<string>exception</string>
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													<string>(:include include:)&#10;----&#10;!!!See Also:&#10;&#10;(:pagelist link=&quot;backlink&quot; except_tags=&quot;exception,member&quot; mod=&quot;w&quot;:)&#10;</string>
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																<string>using enable_current_exception at the time of the throw</string>
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																<string>Index</string>
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																<string>boost/exception/enable_current_exception.hpp</string>
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																<string>boost exception</string>
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													<string>!!Introduction&#10;&#10;The purpose of Boost Exception is to ease the design of exception class hierarchies and to help write exception handling and error reporting code.&#10;&#10;It supports transporting of arbitrary data to the catch site, which is otherwise tricky due to the no-throw requirements (15.5.1) for exception types. Data can be added to any exception object, either directly in the throw-expression (15.1), or at a later time as the exception object propagates up the call stack.&#10;&#10;The ability to add data to exception objects after they have been passed to throw is important, because often some of the information needed to handle an exception is unavailable in the context where the failure is detected. &#10;&#10;Boost Exception also supports (:link http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2179.html|N2179:)-style (:link </string>
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													<string>|copying:) of exception objects, implemented non-intrusively and automatically by the boost::(:link </string>
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													<string>:) function.&#10;&#10;!!Contents&#10;&#10;#Tutorial&#10;##(:link </string>
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													<string>:)&#10;##Transporting of Arbitrary Data to the Catch Site&#10;###(:link </string>
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